64407071 has 2 divisors, whose sum is σ = 64407072. Its totient is φ = 64407070.

The previous prime is 64407059. The next prime is 64407073. The reversal of 64407071 is 17070446.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64407071 is a prime.

Together with 64407073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64407073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32203535 + 32203536.

It is an arithmetic number, because the mean of its divisors is an integer number (32203536).

Almost surely, 2^64407071 is an apocalyptic number.

64407071 is a deficient number, since it is larger than the sum of its proper divisors (1).

64407071 is an equidigital number, since it uses as much as digits as its factorization.

64407071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 64407071 is about 8025.4016098884. The cubic root of 64407071 is about 400.8462728762.

The spelling of 64407071 in words is "sixty-four million, four hundred seven thousand, seventy-one".